GFCI Won't Reset: What It Means
An open neutral fault can leave a GFCI looking completely dead, with no reset possible, even though parts of the circuit may still be carrying voltage.
The most common reasons a GFCI won't reset
First, confirm the breaker feeding that circuit hasn't tripped separately — a tripped breaker will make any downstream GFCI look completely dead. Reset the breaker first, then try the GFCI.
If the breaker is fine, an aging or internally failed GFCI is a frequent cause — these devices have a working lifespan, and manufacturers generally expect owners to test them monthly and eventually replace them.
A less common but more serious cause is an open or loose neutral connection somewhere upstream. This is a wiring-level problem, not something a fresh outlet will fix on its own.
What to check before assuming you need a new outlet
Verify there isn't a second GFCI further upstream on the same run that's already tripped — in feed-through wiring, only the first device in the chain will show a trip indicator.
If you've already ruled out the breaker and a simple swap doesn't restore power, treat it as a wiring issue and bring in a licensed electrician rather than repeatedly swapping outlets.